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474 bytes, as of the version from 2026-10-25 13:49 (current). Recorded here, not run.
{
"sage_version": "10.9",
"control_bilaplacian_x4_plus_y4": "48",
"control_normal_derivative_x_plus_2y": "nu_x + 2*nu_y",
"zero_solution_pde_residual": "0 for arbitrary lam",
"zero_solution_boundary_value": "0",
"zero_solution_normal_derivative": "0 for arbitrary normal",
"conclusion": "The zero function satisfies the homogeneous equations for every lam; the definition of an eigenvalue requires a nonzero solution.",
"spectral_values_recomputed": false
}